has particulars: amphitheater, amphitheatre, coliseum, ballpark, park, bullring, circus, covered stadium, dome, domed stadium, football stadium, hippodrome, skybox

has parts: field house, stand, standing room, tiered seat, athletic field, field, playing area, playing field

is a kind of construction, structure

arena(n = noun.artifact) scene of action - a playing field where sports events take place; Array

has particulars: circus

is a kind of athletic field, field, playing area, playing field

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CIDE DICTIONARY

arena, n. [L. arena, harena, sand, a sandy place.].

The area in the central part of an amphitheater, in which the gladiators fought and other shows were exhibited; -- so called because it was covered with sand. [1913 Webster]
Any place of public contest or exertion; any sphere of action; as, the arenaof debate; the arena of life. [1913 Webster]
“Sand” or “gravel” in the kidneys. [1913 Webster]

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OXFORD DICTIONARY

arena, n.
1 the central part of an amphitheatre etc., where contests take place.
2 a scene of conflict; a sphere of action or discussion.

Idiom

arena stage a stage situated with the audience all round it.

Etymology

L (h)arena sand, sand-strewn place of combat

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DEVIL DICTIONARY

arena

n. In politics, an imaginary rat-pit in which the statesman wrestles with his record.

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THESAURUS

arena

academic discipline, academic specialty, ambit, amphitheater, applied science, area, art, assembly hall, auditorium, back, backdrop, background, bailiwick, beat, border, borderland, chapel, cincture, circle, circuit, circus, close, concern, concert hall, confine, container, convention hall, coop, court, courtyard, curtilage, dance hall, delimited field, demesne, department, department of knowledge, discipline, distance, domain, dominion, enclave, enclosure, exhibition hall, field, field of inquiry, field of study, fold, gallery, ground, hall, hemisphere, hinterland, judicial circuit, jurisdiction, lecture hall, list, locale, march, meetinghouse, mise-en-scene, music hall, natural science, ology, opera house, orb, orbit, pale, paling, park, pen, precinct, province, pure science, quad, quadrangle, realm, rear, ring, round, scene, science, setting, social science, specialty, sphere, square, stadium, stage, stage set, stage setting, study, technicology, technics, technology, theater, toft, walk, yard

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ROGET THESAURUS

arena

Arena

N arena, field, platform, scene of action, theater, walk, course, hustings, stare, boards, amphitheater, Coliseum, Colosseum, Flavian amphitheater, hippodrome, circus, race course, corso, turf, cockpit, bear garden, playground, gymnasium, palestra, ring, lists, tiltyard, tilting ground, Campus Martins, Champ de Allars, campus, boxing ring, canvas, theater of war, seat of war, battle-field, battle-ground, field of battle, field of slaughter, Aceldama, camp, the enemy's camp, trusting place.

Space

N space, extension, extent, superficial extent, expanse, stretch, hyperspace, room, scope, range, field, way, expansion, compass, sweep, swing, spread, dimension, length, distance, size, volume, hypervolume, latitude, play, leeway, purchase, tolerance, room for maneuver, spare room, elbow room, house room, stowage, roomage, margin, opening, sphere, arena, open space, free space, void, waste, wildness, wilderness, moor, moorland, campagna, abyss, unlimited space, infinity, world, ubiquity, length and breadth of the land, proportions, acreage, acres, acres and perches, roods and perches, hectares, square miles, square inches, square yards, square centimeters, square meters, yards (clothing), ares, arpents, spacious, roomy, extensive, expansive, capacious, ample, widespread, vast, world-wide, uncircumscribed, boundless, shoreless, trackless, pathless, extended, extensively, wherever, everywhere, far and near, far and wide, right and left, all over, all the world over, throughout the world, throughout the length and breadth of the land, under the sun, in every quarter, in all quarters, in all lands, here there and everywhere, from pole to pole, from China to Peru, from Indus to the pole, from Dan to Beersheba, from end to end, on the face of the earth, in the wide world, from all points of the compass, to the four winds, to the uttermost parts of the earth.

Vision

N vision, sight, optics, eyesight, view, look, espial, glance, ken, coup d'oeil, glimpse, glint, peep, gaze, stare, leer, perlustration, contemplation, conspection, conspectuity, regard, survey, introspection, reconnaissance, speculation, watch, espionage, espionnage, autopsy, ocular inspection, ocular demonstration, sight-seeing, point of view, gazebo, loophole, belvedere, watchtower, field of view, theater, amphitheater, arena, vista, horizon, commanding view, bird's eye view, periscope, visual organ, organ of vision, eye, naked eye, unassisted eye, retina, pupil, iris, cornea, white, optics, orbs, saucer eyes, goggle eyes, gooseberry eyes, short sight, clear sight, sharp sight, quick sight, eagle sight, piercing sight, penetrating sight, clear glance, sharp glance, quick glance, eagle glance, piercing glance, penetrating glance, clear eye, sharp eye, quick eye, eagle eye, piercing eye, penetrating eye, perspicacity, discernment, catopsis, eagle, hawk, cat, lynx, Argus, evil eye, basilisk, cockatrice, seeing, visual, ocular, optic, optical, ophthalmic, clear-eyesighted, eagle-eyed, hawk-eyed, lynx-eyed, keen- eyed, Argus-eyed, visible, visibly, in sight of, with one's eyes open at sight, at first sight, at a glance, at the first blush, prima facie, Int, look!, the scales falling from one's eyes, an eye like Mars to threaten or command, her eyes are homes of silent prayer, looking before and after, thy rapt soul sitting in thine eyes.

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